Pure sugar is a substance (compound).
It is pure if this sugar is not mixed with another substance.
Refined substance can be a pure substance depending on the type of sugar used. If the refined sugar is white, then it is a pure substance. If it the refined sugar is brown, then it is not a pure substance.
Yes, sugar (sucrose, C12H22O11) is a compound, with only one type of molecule, which is a pure substance.
Confectioners sugar (also called Powdered sugar) differs from "regular sugar" (Granulated sugar) in two ways. Confectioners sugar it's milled to a much finer grain and, and it has cornstarch in it to prevent caking. If you run of of Granulated sugar, you can substitute with Confectioners sugar. Multiply the amount of granulated sugar needed by 1.75. It takes 1 3/4 cup of powdered sugar to substitute for 1 cup of granulated sugar.
There are many types of sugar but, if you are describing one type of sugar and not a mixture of many sugars it would be a pure substance.
Sugar is a pure substance because everything in a sample is alike: a molecule of sugar.
Confectioner's sugar is icing sugar mixture (pure icing sugar with a small amount (about 3%) of starch added as an anti-caking agent). Pure icing sugar is very fine powdered refined sugar with no added starch.
A sugar is a pure substance. Sugar is the generic name for many compounds which are all pure substances. Fructose is a sugar. Glucose is a sugar. Lactose is a sugar. Glucose + Fructose --> Sucrose This is a chemical reaction between 2 sugars to make another, more complex sugar. This reaction if I remember correctly eliminates a water molecule as well as producing sucrose. The reaction occurs in certain plants and is done by an enzyme. Mixing fructose and glucose in a bowl will NOT form sucrose. Refer to the wikipedia article on sugar. It shows the molecular structure of sucrose. A substance cannot have a molecular structure if it is a mixture. It is a compound and compounds are pure substances.
Yes. It is called sucrose and has a chemical formula of C12H22O11.
If it's without milk or sugar - it's a pure substance.
Pure sugar is a compound, which is a pure substance. If you dissolve sugar in water, you will have a homogeneous mixture, which is a solution.